e85Cal vs SPARQ AI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
e85Cal
This app assists users in calculating the precise amounts of standard and ethanol gasoline needed to achieve a desired ethanol percentage in their fuel mix. It simplifies the process by taking into account tank size, current fuel level, and the ethanol content of available fuel types.
- Calculate ethanol percentage goal
- Enter gas tank size
- Input standard pump gas ethanol %
- Input ethanol pump gas ethanol %
- Set target ethanol % mix
- Enter current fuel level %
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e85Cal help you calculate your ethanol percentage goal. It fast, simple, and easy to use. Just enter the following information: 1) How big is your gas tank? 2) What is the ethanol % in the standard pump gas? 3) What is the ethanol % in the ethanol pump gas? 4) What is your target ethanol % mix goal? 5) What is your current ethanol % min in your vehicle? 6) What is your current fuel level % in your vehicle? Results will display how many gallons or liters of standard and ethanol gas to pump in your vehicle based on your input.
SPARQ AI
This app uses AI to monitor your car's health, predicting potential breakdowns and preventing costly repairs. It offers remote diagnostics, real-time condition monitoring, and personalized recommendations based on your vehicle's data and driving habits.
- Predict vehicle breakdowns
- Remote diagnostics
- Diagnose 50,000+ trouble codes
- Real-time vehicle condition monitoring
- AI car health scoring
- Individual component health status
- Vehicle records and reminders
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SPARQ AI is the Most Powerful Car Health Monitor that can help car owners predict vehicle breakdowns before they occur, preventing you from paying for expensive repairs. Powered by SPARQ's AI Model. Compatible with vehicles 2010 and newer manufactured for the US Market. Perform Remote Diagnostics, Diagnose more than 50,000 Trouble Codes, Monitor Real-Time Vehicle Condition, Access to SPARQ's Proprietary A.I. Car Health Scoring System, and additional features that give you control over your vehicle. SPARQ's AI (Beta) is trained on automotive insights from manufacturers, car owners of the same vehicle, and first party data gathered from your car's trouble codes and driving behavior. Allowing SPARQ to provide a multitude of personalized car recommendations and predictions that are tailored based on your vehicle's present, past and future. Key Features - Comprehensive Diagnostics. Ability to perform full comprehensive diagnostics on vehicles, including generic and manufacturer-specific codes. - AI Powered Health Scoring System. Providing an overall rating of the user's vehicle based on the data that is collected from the user's car along with their driving patterns. Individualized Car Component Health Status. A summary of the overall health status of major components of the user's car. Providing deeper insights into different vehicle systems in the car. - Vehicle Records (Beta). Users can create registration, inspection, and service records and reminders on the SPARQ App. Providing users with a single destination point for their vehicle history, and future maintenance milestones. - Vehicle Specs. Vehicle Specifications about the user's vehicle will be automatically populated by SPARQ. Allowing users to easily check on their vehicle specs, such as rim sizes, tire sizes, fuel data, etc... - Multi-Vehicle Access. Users will be able to add multiple vehicles under their profile so they can have boundless access to their vehicles' information. Users will also be able to retrieve their car information without an active connection to SPARQ AI. However, a connection to the device is required to obtain Diagnostic Data from the vehicle. Start Your Journey Today.
Screenshots
Verdict
The clearest difference is update cadence: SPARQ AI at every 8 days against e85Cal's every 4 months. SPARQ AI also leads on ratings volume (374 vs 37). e85Cal's advantage is review sentiment (83% vs 63%) and monetization model (free vs ad-supported). On price, rating, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.7 for e85Cal against 4.7 for SPARQ AI. That said, the two scores are not equally well evidenced: SPARQ AI has 374 ratings behind it against 37, so its average is the more settled of the two. Written reviews are what separate them: 83% of e85Cal's written reviews are positive against 63% of SPARQ AI's.
e85Cal ships an update every 4 months, SPARQ AI every 8 days. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.
| Parameter | e85Cal | SPARQ AI |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (37 ratings) | 4.7 (374 ratings) — better |
| Positive reviews | 83.3% of reviews — better | 63.4% of reviews |
| Number of ratings | 37 | 374 — better |
| Update frequency | Every 4 months | Every 8 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 12.1 — better | 16.6 |
| Further details — not scored | ||
| Size | 15 MB | 322 MB |
| Age rating | 4+ | 17+ |
| Developer | Michael Joe | Joinsparq |
Customer experience
e85Cal
SPARQ AI
Bugs and requests
e85Cal
Not enough reviews yet to summarise bugs or requests.
SPARQ AI
Reported bugs
8 issues- Bluetooth pairing fails with 'SPARQ not supported' error after updates
- App screens in Care Guide section don't populate
- Mileage reading displays 40,000+ miles higher than actual
- Inconsistent code detection across different vehicles
- App freezes and becomes unresponsive
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- Incorrect vehicle system identification (shows systems not present)
- Fails to detect maintenance reminders and notifications
- Device doesn't detect mechanical issues (e.g., engine rattling)
Requested features
10 requests- Maintenance logging feature with dates and mileage tracking
- Live data stream viewing capability
- Ability to clear diagnostic codes
- Dashboard warning light detection and reset
- Tire pressure (TPMS) sensor reading
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- Vehicle-specific car images in app (e.g., NC1 NSX)
- Predictive maintenance alerts (e.g., next oil change timing)
- Airbag light detection capability
- Raw diagnostic data display for advanced users
- Faster app performance optimization
In-app purchases
e85Cal
No in-app purchases
SPARQ AI
No in-app purchases
